From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9412B3DB653 for ; Fri, 8 May 2026 14:23:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778250233; cv=none; b=bT6hSAR6zBvH9050z6hFMxiGuDs9+n4uowcjDxn9esCEfwRk8AbhbHkTNkBh6Yb9FfCV6X++waj/44YQtSnPrf5rz1xgGD1aIaKn+0/KymKtHePnNH0MqUVFeQtM6Mgu7q2v6Z3Qy2s/md4HeNm33yXzWBU+1iKC50wry1EscyA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778250233; c=relaxed/simple; bh=l3IvJMdASTuvrtvVf0qaF33UWvO4Saf/UoVrEyMvXOA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=mMzCvbGnkBewVdCFkS437/bkIu9cLdkqd4Z/oXLxSCaAs46WvcowXNsM5UQMjDcRJhezFgqk+j7CiuYDbdxutBb1Y4X8n3KIb8zdQl3fQFUt0el13hUypTwI9/N3NlDn4/iJqAZHjPbGEAE6wuFcoXWB3DWOaEl+yFsSNt/tC58= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=d/P6u0ja; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="d/P6u0ja" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 31328C2BCB0; Fri, 8 May 2026 14:23:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778250233; bh=l3IvJMdASTuvrtvVf0qaF33UWvO4Saf/UoVrEyMvXOA=; h=From:To:Cc:Subject:Date:Reply-To:From; b=d/P6u0ja3YIWh1rxKQXU7yt71KbaWwp7XbrvNmMLa7/JN44lQSHJcPRgRAoZbZtlH SsRL6jB/MIVXcSD2PYfUKTC9apg0eQsxFFiBVKcflVqrNKdobdPGmSXc3qMn+LJN3n 6l1HAWe7D+IKu7SkDsK4cfQKSgE7WtypWyF/mmto= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43397: drm/bridge: samsung-dsim: Fix memory leak in error path Date: Fri, 8 May 2026 16:22:06 +0200 Message-ID: <2026050838-CVE-2026-43397-2864@gregkh> X-Mailer: git-send-email 2.54.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3092; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=PUjLmeo8m+igM6RaW2Dr/SUIVYfX3XPpcSv5cT6wkns=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/PxaLPS79vKtPaW+e3wubTsG1JWL5LN4/pZWCj+2wk Zw418emI5aFQZCJQVZMkeXLNp6j+ysOKXoZ2p6GmcPKBDKEgYtTACbyR4hhft5VrtOPHscZKgoZ ar5bduHOlaqDbQzzTL37n0uZbpR5wJtZWP/X/Orr6t6NAA== X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/bridge: samsung-dsim: Fix memory leak in error path In samsung_dsim_host_attach(), drm_bridge_add() is called to add the bridge. However, if samsung_dsim_register_te_irq() or pdata->host_ops->attach() fails afterwards, the function returns without removing the bridge, causing a memory leak. Fix this by adding proper error handling with goto labels to ensure drm_bridge_remove() is called in all error paths. Also ensure that samsung_dsim_unregister_te_irq() is called if the attach operation fails after the TE IRQ has been registered. samsung_dsim_unregister_te_irq() function is moved without changes to be before samsung_dsim_host_attach() to avoid forward declaration. The Linux kernel CVE team has assigned CVE-2026-43397 to this issue. Affected and fixed versions =========================== Issue introduced in 6.4 with commit e7447128ca4a250374d6721ee98e3e3cf99551a6 and fixed in 6.6.130 with commit 98310fe3a2a79671b739a5344c1a11d74c503e25 Issue introduced in 6.4 with commit e7447128ca4a250374d6721ee98e3e3cf99551a6 and fixed in 6.12.78 with commit 0b07f7d2c5a4078c2f1c11bb36685084fe4e5c95 Issue introduced in 6.4 with commit e7447128ca4a250374d6721ee98e3e3cf99551a6 and fixed in 6.18.19 with commit e6d779654cda63d632bd8dfcdcabd125057e30a5 Issue introduced in 6.4 with commit e7447128ca4a250374d6721ee98e3e3cf99551a6 and fixed in 6.19.9 with commit a40b92fb4b26d4cb1b5e439e55a56db7e79a82d1 Issue introduced in 6.4 with commit e7447128ca4a250374d6721ee98e3e3cf99551a6 and fixed in 7.0 with commit 803ec1faf7c1823e6e3b1f2aaa81be18528c9436 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-43397 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/gpu/drm/bridge/samsung-dsim.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/98310fe3a2a79671b739a5344c1a11d74c503e25 https://git.kernel.org/stable/c/0b07f7d2c5a4078c2f1c11bb36685084fe4e5c95 https://git.kernel.org/stable/c/e6d779654cda63d632bd8dfcdcabd125057e30a5 https://git.kernel.org/stable/c/a40b92fb4b26d4cb1b5e439e55a56db7e79a82d1 https://git.kernel.org/stable/c/803ec1faf7c1823e6e3b1f2aaa81be18528c9436